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  • Title: High levels of mutagenic activity in chlorinated drinking water in Finland.
    Author: Vartiainen T, Liimatainen A.
    Journal: Mutat Res; 1986; 169(1-2):29-34. PubMed ID: 3511365.
    Abstract:
    The organic extract from the drinking water of Kuopio, Eastern Finland, turned out to be highly mutagenic in the Ames test. The direct mutagenic activities of the acid/neutral fractions of 48 drinking water samples were on an average 1700 net revertants/l in strain TA100. The highest activities were more than 6000 net revertants/l, and one drinking water sample exceeded 10 000 net revertants/l. The drinking water of Kuopio is produced from lake water which has a relatively high content of humic substances. Water processing involved two chlorination phases. The organic constituents of the water samples were isolated either by continuous liquid-liquid extraction or by absorption on XAD 8 resin.
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